﻿// --------------------------------------------------------------------------------------------
// <copyright file="IndexConfiguration.cs" company="Effort Team">
//     Copyright (C) 2011-2014 Effort Team
//
//     Permission is hereby granted, free of charge, to any person obtaining a copy
//     of this software and associated documentation files (the "Software"), to deal
//     in the Software without restriction, including without limitation the rights
//     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//     copies of the Software, and to permit persons to whom the Software is
//     furnished to do so, subject to the following conditions:
//
//     The above copyright notice and this permission notice shall be included in
//     all copies or substantial portions of the Software.
//
//     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//     AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//     THE SOFTWARE.
// </copyright>
// --------------------------------------------------------------------------------------------

namespace Effort.Internal.DbManagement.Schema.Configuration
{
    using System.Linq;

    internal class IndexConfiguration : ITableConfiguration
    {
        public void Configure(EntityInfo entityInfo, DbTableInfoBuilder builder)
        {
            var indexes = entityInfo
                .Properties
                .SelectMany(p => p.Indexes, (p, i) => new { Property = p, Index = i })
                .GroupBy(x => x.Index.Name);

            foreach (var indexGroup in indexes)
            {
                var index = indexGroup.First().Index;

                var indexProps = indexGroup
                    .OrderBy(x => x.Index.Order)
                    .Select(x => builder.FindMember(x.Property))
                    .ToArray();

                var keyInfo = KeyInfoHelper.CreateKeyInfo(builder.EntityType, indexProps);

                builder.AddKey(keyInfo, index.IsUnique);
            }

        }
    }
}
